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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Aluminum Industry Emissions Measurement, Reporting & Reduction
Presentation Title Heavy Metal Emissions through Dust from Aluminium Electrolysis
Author(s) Fride Muller, Thor Anders Aarhaug, Gabriella M. Tranell
On-Site Speaker (Planned) Gabriella M. Tranell
Abstract Scope Heavy metals in airborne particulate matter (PM), is considered a health and environmental concern. A better understanding of the formation and characteristics of the dust is necessary to improve monitoring and control measures of these emissions. Both settled and collected airborne dust from Norwegian smelters were characterised by dry laser diffraction, SEM/TEM, XRD and ICP-MS. PM emissions (PM1.0, PM2.5, PM4.0 and PM10) were measured by optical PM sensors, mapping variations in fugitive emissions in different potroom areas. Heavy metals were often found as inclusions or on the surface of larger carbon particles in the dust. Nickel and iron were found as phosphorous or sulfur compounds. The particle size for settled and airborne dust were mainly in the PM10+ range, while the average particle size for particles measured by the sensor system were around 0.6 µm at roof and floor level. Anode change gave rise to higher emissions than other operations.
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum, Environmental Effects, Other

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Characterization of Industrial Hydrocarbon Samples from Anode Baking Furnace Off-gas Treatment Facility
Determination of PFC with Canister Sampling and Medusa GC-MS Analysis in Comparison to General IPCC Estimation Methods
Heavy Metal Emissions through Dust from Aluminium Electrolysis
Individual Pot Sampling for Low-voltage PFC Emissions Characterization and Reduction
Reaching Zero Carbon Emissions in Aluminium Electrolysis
Verification of Open-path Dust Laser for Continuous Monitoring of Diffuse Emissions

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